Isometric System
Cochise College    
Crystals and Crystal Models 
Virtual Geology Museum      Hall of Minerals

Geology Home Page                      

Roger Weller, geology instructor

wellerr@cochise.edu
copyright 2008-R.Weller
 

crystals of minerals
tetrahedron-modified-sphalerite-2
 

Photograph is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.